Shut-off valve for suction cup comprises flexible tube fitted on end of vacuum line, sealing lips being molded on lower end of tube, which closes when pressure on its outer walls exceeds threshold value to cut off vacuum from cup

摘要

The shut-off valve for a suction cup (3) comprises a flexible tube (1) which fits on the end of the vacuum line. Sealing lips are molded on its lower end and it closes when the pressure on its outer walls exceeds a threshold value to cut off vacuum from the cup.